User Registration and Login System Using PHP and MySQL

<?php
/*****************************
	File: includes/config.php
	Written by: Frost of Slunked.com
	Tutorial: User Registration and Login System
******************************/
// start the session before any output.
session_start();
 
// Set the folder for our includes
$sFolder = 'login'; 
 
/***************
	Database Connection 
		You will need to change the user (user) 
		and password (password) to what your database information uses. 
		Same with the database name if you used something else.
****************/
mysql_connect('localhost', 'root', '') or trigger_error("Unable to connect to the database: " . mysql_error());
mysql_select_db('login') or trigger_error("Unable to switch to the database: " . mysql_error());
 
/***************
	password salts are used to ensure a secure password
	hash and make your passwords much harder to be broken into
	Change these to be whatever you want, just try and limit them to
	10-20 characters each to avoid collisions. 
****************/
define('SALT1', '24859f@#$#@$');
define('SALT2', '^&@#_-=+Afda$#%');
 
// require the function file
require_once($_SERVER['DOCUMENT_ROOT'] . $sFolder . '/includes/functions.php');
 
// default the error variable to empty.
$_SESSION['error'] = "";
 
// declare $sOutput so we do not have to do this on each page.
$sOutput="";
?>